WeWork Companies Inc., a provider of shared office space, believes it can be as transformational to its industry as upstarts like Airbnb Inc. and Uber Technologies Inc. are in travel and transportation.

The four-year-old company, which divvies up rented office space and sublets largely to startups, said on Monday it closed a $355 million funding round. The deal values the company at about $5 billion, said people close to the matter.